(19)

(11)

EP 0 414 735 A1

(12)

(43) Date of publication: 06.03.1991 Bulletin 1991/10 (21) Application number: 89905044.0 (22) Date of filing: 20.04.1989

(51) International Patent Classification (IPC):  F16L 59/ 16( . ) (86) International application number: PCT/AU1989/000172 (87) International publication number: WO 1989/010513 (02.11.1989 Gazette 1989/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 20.04.1988 AU 19880007836 (71) Applicant: APPLIED INSULATION PTY LTD. Kewdale, W.A. 6105 (AU)	(72) Inventor: LIM, Ek, Jin, Thomas Bullcreek, W.A. (AU) (74) Representative: Opperman, Stuart Richard, et al  Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)